docs: def on_delete(self, forced):
          """Session expiration callback
  
          `forced`
              If session item explicitly deleted, forced will be set to True. If
              item expired, will be set to False.
          """
          # Do not remove connection if it was not forced and there's running connection
          if not forced and self.handler is not None and not self.is_closed:
              self.promote()
          else:
              self.close()